| Lowering the Operational Voltage of Single-Layer Polymer Electroluminescent Devices by Using CuOx Modifying Indium-Tin Oxide Electrode |
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| 作者姓名： | ZHOU Xin-ran ZHAO Xin-wen HU Wen-ping |
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| 作者单位： | [1]School of Information Science and Engineering, Central South University Changsha 410075 China [2]School of Physical Science and Technology, Central South University Changsha 410075 China 3. Institute of Chemistry, Chinese Academy of Sclences Beijing 100080 China [3]Instltute of Chemistry, Chinese Academy of Sciences Beijing 100080 China |
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| 基金项目： | Acknowledgements The authors acknowledge Prof. Michio Matsumura＇s （0saka University, Japan） kind direction and help. |
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| 摘 要： | In this study it is demonstrated that oxygen-plasma-generated CuOx can enhance the holes injection from ITO anode into polymer layer in single-layer polymer EL devices. The possible reason for this enhancement is because the ITO anode modified with CuOx possesses much higher work function than pure ITO anode,which reduces the barrier for hole-injection and further lowers the operational voltage of the polymer EL devices. The work function shift is probable due to the oxygen-plasma-generated CuOx can store more releasable oxygen,and the releasable oxygen in turn changes the oxygen concentration just near ITO surface,which will shift the work function of ITO anode.
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| 关 键 词： | 铟-氧化锡电极 氧化铜修饰 单层聚合物 场致发光器件 工作电压 |
| 收稿时间： | 2006-06-15 |
Lowering the Operational Voltage of Single-Layer Polymer Electroluminescent Devices by Using CuOx Modifying Indium-Tin Oxide Electrode |
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| ZHOU Xin-ran ZHAO Xin-wen HU Wen-ping.Lowering the Operational Voltage of Single-Layer Polymer Electroluminescent Devices by Using CuOx Modifying Indium-Tin Oxide Electrode[J].Journal of Electronic Science Technology of China,2007,5(1):44-46. |
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| Authors: | ZHOU Xin-ran ZHAO Xin-wen HU Wen-ping |
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| Abstract: | In this study it is demonstrated that oxygen-plasma-generated CuOx can enhance the holes injection from ITO anode into polymer layer in single-layer polymer EL devices. The possible reason for this enhancement is because the ITO anode modified with CuOx possesses much higher work function than pure ITO anode, which reduces the barrier for hole-injection and further lowers the operational voltage of the polymer EL devices. The work function shift is probable due to the oxygen-plasma-generated CuOx can store more releasable oxygen, and the releasable oxygen in turn changes the oxygen concentration just near ITO surface, which will shift the work function of ITO anode. |
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| Keywords: | operational voltage Indium-tin oxide electrode single-layer polymer electroluminescent devices CuOx |
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